diff --git a/src/commands/watch.js b/src/commands/watch.js
index c3c2bb7a3..b03e7edd1 100644
--- a/src/commands/watch.js
+++ b/src/commands/watch.js
@@ -43,7 +43,7 @@ export default asyncCommand({
 	async handler(argv) {
 		argv.production = false;
 
-		if (argv.https) {
+		if (argv.https || process.env.HTTPS) {
 			let ssl = await getSslCert();
 			if (!ssl) {
 				ssl = true;
diff --git a/src/lib/webpack/run-webpack.js b/src/lib/webpack/run-webpack.js
index ae22bff69..c6cce632d 100644
--- a/src/lib/webpack/run-webpack.js
+++ b/src/lib/webpack/run-webpack.js
@@ -41,7 +41,7 @@ const devBuild = async (env, onprogress) => {
 
 		compiler.plugin('done', stats => {
 			let devServer = config.devServer;
-			let protocol = devServer.https ? 'https' : 'http';
+			let protocol = (process.env.HTTPS || devServer.https) ? 'https' : 'http';
 			let host = process.env.HOST || devServer.host || 'localhost';
 
 			let serverAddr = `${protocol}://${host === '0.0.0.0' ? 'localhost' : host}:${chalk.bold(port)}`;